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authorkali <kali@leap.se>2012-12-27 03:09:34 +0900
committerkali <kali@leap.se>2012-12-27 03:09:34 +0900
commitb4af406e6cf233d939e3dfa5b5c9b2241b6d8ea0 (patch)
tree705a6648ca850000ed07fc65c9d03dc049a9784e /src/leap/soledad/backends/leap.py
parent1834c0e5207d3edb0002558715aaf30676e6d847 (diff)
import fixes for soledad
Diffstat (limited to 'src/leap/soledad/backends/leap.py')
-rw-r--r--src/leap/soledad/backends/leap.py175
1 files changed, 0 insertions, 175 deletions
diff --git a/src/leap/soledad/backends/leap.py b/src/leap/soledad/backends/leap.py
deleted file mode 100644
index 9fbd49fe..00000000
--- a/src/leap/soledad/backends/leap.py
+++ /dev/null
@@ -1,175 +0,0 @@
-try:
- import simplejson as json
-except ImportError:
- import json # noqa
-
-from u1db import Document
-from u1db.remote.http_target import HTTPSyncTarget
-from u1db.remote.http_database import HTTPDatabase
-import base64
-from soledad.util import GPGWrapper
-
-
-class NoDefaultKey(Exception):
- pass
-
-class NoSoledadInstance(Exception):
- pass
-
-
-class LeapDocument(Document):
- """
- LEAP Documents are standard u1db documents with cabability of returning an
- encrypted version of the document json string as well as setting document
- content based on an encrypted version of json string.
- """
-
- def __init__(self, doc_id=None, rev=None, json='{}', has_conflicts=False,
- encrypted_json=None, soledad=None):
- super(LeapDocument, self).__init__(doc_id, rev, json, has_conflicts)
- self._soledad = soledad
- if encrypted_json:
- self.set_encrypted_json(encrypted_json)
-
- def get_encrypted_json(self):
- """
- Returns document's json serialization encrypted with user's public key.
- """
- if not self._soledad:
- raise NoSoledadInstance()
- ciphertext = self._soledad.encrypt_symmetric(self.doc_id, self.get_json())
- return json.dumps({'_encrypted_json' : ciphertext})
-
- def set_encrypted_json(self, encrypted_json):
- """
- Set document's content based on encrypted version of json string.
- """
- if not self._soledad:
- raise NoSoledadInstance()
- ciphertext = json.loads(encrypted_json)['_encrypted_json']
- plaintext = self._soledad.decrypt_symmetric(self.doc_id, ciphertext)
- return self.set_json(plaintext)
-
-
-class LeapDatabase(HTTPDatabase):
- """Implement the HTTP remote database API to a Leap server."""
-
- def __init__(self, url, document_factory=None, creds=None, soledad=None):
- super(LeapDatabase, self).__init__(url, creds=creds)
- self._soledad = soledad
- self._factory = LeapDocument
-
- @staticmethod
- def open_database(url, create):
- db = LeapDatabase(url)
- db.open(create)
- return db
-
- @staticmethod
- def delete_database(url):
- db = LeapDatabase(url)
- db._delete()
- db.close()
-
- def get_sync_target(self):
- st = LeapSyncTarget(self._url.geturl())
- st._creds = self._creds
- return st
-
- def create_doc_from_json(self, content, doc_id=None):
- if doc_id is None:
- doc_id = self._allocate_doc_id()
- res, headers = self._request_json('PUT', ['doc', doc_id], {},
- content, 'application/json')
- new_doc = self._factory(doc_id, res['rev'], content, soledad=self._soledad)
- return new_doc
-
-
-class LeapSyncTarget(HTTPSyncTarget):
-
- def __init__(self, url, creds=None, soledad=None):
- super(LeapSyncTarget, self).__init__(url, creds)
- self._soledad = soledad
-
- def _parse_sync_stream(self, data, return_doc_cb, ensure_callback=None):
- """
- Does the same as parent's method but ensures incoming content will be
- decrypted.
- """
- parts = data.splitlines() # one at a time
- if not parts or parts[0] != '[':
- raise BrokenSyncStream
- data = parts[1:-1]
- comma = False
- if data:
- line, comma = utils.check_and_strip_comma(data[0])
- res = json.loads(line)
- if ensure_callback and 'replica_uid' in res:
- ensure_callback(res['replica_uid'])
- for entry in data[1:]:
- if not comma: # missing in between comma
- raise BrokenSyncStream
- line, comma = utils.check_and_strip_comma(entry)
- entry = json.loads(line)
- # decrypt after receiving from server.
- doc = LeapDocument(entry['id'], entry['rev'],
- encrypted_json=entry['content'],
- soledad=self._soledad)
- return_doc_cb(doc, entry['gen'], entry['trans_id'])
- if parts[-1] != ']':
- try:
- partdic = json.loads(parts[-1])
- except ValueError:
- pass
- else:
- if isinstance(partdic, dict):
- self._error(partdic)
- raise BrokenSyncStream
- if not data or comma: # no entries or bad extra comma
- raise BrokenSyncStream
- return res
-
- def sync_exchange(self, docs_by_generations, source_replica_uid,
- last_known_generation, last_known_trans_id,
- return_doc_cb, ensure_callback=None):
- """
- Does the same as parent's method but encrypts content before syncing.
- """
- self._ensure_connection()
- if self._trace_hook: # for tests
- self._trace_hook('sync_exchange')
- url = '%s/sync-from/%s' % (self._url.path, source_replica_uid)
- self._conn.putrequest('POST', url)
- self._conn.putheader('content-type', 'application/x-u1db-sync-stream')
- for header_name, header_value in self._sign_request('POST', url, {}):
- self._conn.putheader(header_name, header_value)
- entries = ['[']
- size = 1
-
- def prepare(**dic):
- entry = comma + '\r\n' + json.dumps(dic)
- entries.append(entry)
- return len(entry)
-
- comma = ''
- size += prepare(
- last_known_generation=last_known_generation,
- last_known_trans_id=last_known_trans_id,
- ensure=ensure_callback is not None)
- comma = ','
- for doc, gen, trans_id in docs_by_generations:
- # encrypt before sending to server.
- size += prepare(id=doc.doc_id, rev=doc.rev,
- content=doc.get_encrypted_json(),
- gen=gen, trans_id=trans_id)
- entries.append('\r\n]')
- size += len(entries[-1])
- self._conn.putheader('content-length', str(size))
- self._conn.endheaders()
- for entry in entries:
- self._conn.send(entry)
- entries = None
- data, _ = self._response()
- res = self._parse_sync_stream(data, return_doc_cb, ensure_callback)
- data = None
- return res['new_generation'], res['new_transaction_id']